Skin inhomogeneity as a source of error in remote PPG-imaging
Skin inhomogeneity as a source of error in remote PPG-imaging
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DOI：
10.1364/boe.7.004718
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发表时间：
2016-11-01
影响因子：
3.4
通讯作者：
de Haan, Gerard
中科院分区：
文献类型：
--
作者：
Moco, Andreia Vieira;Stuijk, Sander;de Haan, Gerard
远程光电容积描记（rPPG）成像是一种光学技术，以远程评估局部皮肤微循环。尽管它有潜力使健康相关的应用程序，目前的理解结果图像/地图仍然不完整。在本文中，我们提出了一个模型和支持实验，证实了皮肤的不均匀性的形态PPG波形的贡献。由于rPPG成像器依赖于复杂的内积算子并且可以联合收割机组合多个波长，因此所导出的相位测量比传播相关的相位差更大程度地反映PPG信号的形态异质性。观察光穿透深度对PPG的影响，并在手部区域的绿色和红色波长上建模。我们进一步展示了我们的工作如何有助于理解最近关于脉搏波速度（PWV）估计的论文中的再现性问题。(C)2016美国光学学会
Remote photoplethysmography (rPPG) imaging is an optical technique to remotely assess the local cutaneous microcirculation. Despite its potential for enabling health-related applications, the current understanding of the outcome images/maps remains incomplete. In this paper, we present a model and supporting experiments confirming the contribution of skin inhomogeneity to the morphology of PPG waveforms. Since rPPG imagers rely on the complex inner-product operator and may combine multiple wavelengths, the derived phase measurements reflect morphological heterogeneity of PPG signals to a larger extent than propagation-related phase di ff erences. The influence of light penetration depth on PPG was observed and modeled on the green and red wavelengths at the hand region. We further show how our work contributes to understanding reproducibility issues in recent papers on pulse wave velocity (PWV) estimation. (C) 2016 Optical Society of America